A151819 - OEIS

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A151819

First component x of pairs (x,y) where x!+y! is a square, sorted on x.

0, 0, 0, 1, 1, 1, 2, 4, 4, 4 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,7`
	COMMENTS	`Conjecture: the only solutions for x!+y!=n^2 are x=0,0,0,1,1,1,2,4,4,4 and y=4,5,7,4,5,7,2,0,1,5 respectively.`
	CROSSREFS	`Added as a companion to A082871.` `Sequence in context: A131118 A140765 A097541 * A079560 A088680 A143194` `Adjacent sequences: A151816 A151817 A151818 * A151820 A151821 A151822`
	KEYWORD	`nonn`
	AUTHOR	`Farideh Firoozbakht (f.firoozbakht(AT)sci.ui.ac.ir), Jul 07 2009`

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Last modified February 15 11:03 EST 2012. Contains 205763 sequences.